|
Size: 4783
Comment:
|
Size: 3901
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 4: | Line 4: |
| ---- /!\ '''Edit conflict - other version:''' ---- | |
| Line 7: | Line 6: |
| ---- /!\ '''Edit conflict - your version:''' ---- = DATA GUIDE = |
''''' Preamble (please read)''''' |
| Line 10: | Line 8: |
| ---- /!\ '''End of edit conflict''' ---- | There are a wide range of tools available to access AIA data and images. They were designed to suit users with a wide variety of needs. This page guides a user through the AIA data system based on their needs and interests. First and foremost, a user should understand why a versatile data system is necessary. An AIA full-resolution image has 4096x4096 pixels, and AIA has <A HREF="#CHANNELS">ten different AIA wave bands, or channels</A>. A single full-resolution JPEG can be up to 10 MB in size (a single uncompressed science data file can be dozens of MB) and the AIA performs these observations continuously at a rate of approximately 1 image per second. With previous solar missions, it was not unusual for a user to request a few hours of data. In the case of the AIA, this request would amount to over half a terabyte of data. Even one hour of images at a single wavelength is on the order of 10 GB in size. <p> It is clear that a simple data access system is not suitable for the AIA. We have devised a number of tools so that the user can access specific data sets as quickly as possible. <p> Please note: This guide does not contain the full range of tools and resources available to AIA data users. The user has a great deal of flexibility, and there is no single "correct" way to identify, obtain, and analyze AIA data. It is hoped that this guide will help the user get started with AIA data, and that users will familiarize themselves with the additional resources over time. |
| Line 12: | Line 30: |
| [table of contents] | |
| Line 15: | Line 34: |
---- /!\ '''Edit conflict - other version:''' ---- === Section I.a: I need to browse through some data before I can decide what data I'd like to request. === === Section I.b: I'd like a more detailed look instead of just a "browse." === === Section I.c: I'm looking for a specific feature, event or phenomenon but I haven't determined the date/times of the images I need. === === Section I.d: I know the start time and end time of the event or phenomenon I'd like to study, but I don't know which wavelength(s). === == Section II: Accessing the data == === Section II.a: I want images and/or a movie, and I don't need the full science data files. === === Section II.b: I need FITS data files, and I think I know the time range and wavelengths of the images I want. === === Section II.c: I need FITS data files, I know the time range and wavelengths of the images I want, but the available data volume is overwhelming. === ==== Case 1: Using subfields/cutouts Section II.d: I need FITS data files, I know the time range and wavelengths of the images I want, but the available data volume is overwhelming. ==== ==== Case 2: Decreasing the temporal or spatial resolution ==== == Section III: Analyzing the data == === Section III.a: Well, well, well. So what have we here? === === Section III.b: What analysis tools are available? === === Section III.c: What are the limitations of the data? === === Section III.d: I'm ready to publish. Who do I acknowledge? === == Appendix I: IDL and the SolarSoft software tree == === Appendix I.a: What is IDL? === === Appendix I.b: What is SolarSoft? === === Appendix I.c: I have IDL, but I don't have the SolarSoft software tree on my computer. === === Appendix I.d: I have the SolarSoft software tree on my computer, but I'm not sure if I have the appropriate software packages installed. === == Appendix II: Identifying and retrieving data using the Virtual Solar Observatory's IDL interface == === Appendix II.a: Searching the VSO catalog using vso_search.pro === === Appendix II.b: Retrieving data with vso_get.pro === ---- /!\ '''Edit conflict - your version:''' ---- |
|
| Line 88: | Line 69: |
| ---- /!\ '''End of edit conflict''' ---- |
DATA GUIDE
Preamble (please read)
There are a wide range of tools available to access AIA data and images. They were designed to suit users with a wide variety of needs. This page guides a user through the AIA data system based on their needs and interests. First and foremost, a user should understand why a versatile data system is necessary. An AIA full-resolution image has 4096x4096 pixels, and AIA has <A HREF="#CHANNELS">ten different AIA wave bands, or channels</A>. A single full-resolution JPEG can be up to 10 MB in size (a single uncompressed science data file can be dozens of MB) and the AIA performs these observations continuously at a rate of approximately 1 image per second. With previous solar missions, it was not unusual for a user to request a few hours of data. In the case of the AIA, this request would amount to over half a terabyte of data. Even one hour of images at a single wavelength is on the order of 10 GB in size. <p> It is clear that a simple data access system is not suitable for the AIA. We have devised a number of tools so that the user can access specific data sets as quickly as possible. <p> Please note: This guide does not contain the full range of tools and resources available to AIA data users. The user has a great deal of flexibility, and there is no single "correct" way to identify, obtain, and analyze AIA data. It is hoped that this guide will help the user get started with AIA data, and that users will familiarize themselves with the additional resources over time.
[table of contents]
Section I: Determining which data you want
Section I.a: I need to browse through some data before I can decide what data I'd like to request.
Section I.b: I'd like a more detailed look instead of just a "browse."
Section I.c: I'm looking for a specific feature, event or phenomenon but I haven't determined the date/times of the images I need.
Section I.d: I know the start time and end time of the event or phenomenon I'd like to study, but I don't know which wavelength(s).
Section II: Accessing the data
Section II.a: I want images and/or a movie, and I don't need the full science data files.
Section II.b: I need FITS data files, and I think I know the time range and wavelengths of the images I want.
Section II.c: I need FITS data files, I know the time range and wavelengths of the images I want, but the available data volume is overwhelming.
Case 1: Using subfields/cutouts Section II.d: I need FITS data files, I know the time range and wavelengths of the images I want, but the available data volume is overwhelming.
Case 2: Decreasing the temporal or spatial resolution
Section III: Analyzing the data
Section III.a: Well, well, well. So what have we here?
=== Section III.b: What analysis tools are available? ===
Section III.c: What are the limitations of the data?
Section III.d: I'm ready to publish. Who do I acknowledge?
Appendix I: IDL and the SolarSoft software tree
Appendix I.a: What is IDL?
Appendix I.b: What is SolarSoft?
Appendix I.c: I have IDL, but I don't have the SolarSoft software tree on my computer.
Appendix I.d: I have the SolarSoft software tree on my computer, but I'm not sure if I have the appropriate software packages installed.
Appendix II: Identifying and retrieving data using the Virtual Solar Observatory's IDL interface
Appendix II.a: Searching the VSO catalog using vso_search.pro
Appendix II.b: Retrieving data with vso_get.pro
Email: MailTo(you AT SPAMFREE example DOT com)
...